The 5‐heterofunctionalized triazoles are important scaffolds in bioactive compounds, but current clickreactions (CuAAC) cannot produce these core structures. A copper(I)‐catalyzed interruptedclickreaction to access diverse 5‐functionalized triazoles is reported. Various 5‐amino‐, thio‐, and selenotriazoles were readily assembled in one step in high yields. The reaction proceeds under mild conditions
Ruthenium‐Catalyzed Highly Regioselective Azide‐Internal Thiocyanatoalkyne Cycloaddition under Mild Conditions: Experimental and Theoretical Studies
作者:Wangze Song、Ming Li、Kun Dong、Yubin Zheng
DOI:10.1002/adsc.201901014
日期:2019.11.19
azide‐internal thiocyanatoalkyne cycloaddition reaction undermildconditions. This is the first time that fully substituted 5‐thiocyanato‐1,2,3‐triazoles have been prepared and the first time an AAC/nucleophilic substitution cascade reaction have been used to generate various fully substituted triazolyl‐organosulfurs, such as 5‐sulfur‐triazoles and 5‐sulfinylcyanato‐triazoles from common internal thiocyanatoalkyne
A regioselective method to access fully substituted 5‐trifluoromethylthio‐1,2,3‐triazoles and 5‐thio‐1,2,3‐triazoles from the internal alkynyl trifluoromethyl sulfides and internal thioalkynes by a rhodium(I)‐catalyzed azide‐alkyne cycloaddition (RhAAC) reaction under mild conditions has been developed. This approach features good compatibility with water and air, a broad substrate scope, good functional
Iridium-Catalyzed Intermolecular Azide-Alkyne Cycloaddition of Internal Thioalkynes under Mild Conditions
作者:Shengtao Ding、Guochen Jia、Jianwei Sun
DOI:10.1002/anie.201309855
日期:2014.2.10
An iridium‐catalyzed azide–alkynecycloaddition reaction (IrAAC) of electron‐rich internal alkynes is described. It is the first efficient intermolecular AAC of internal thioalkynes. The reaction exhibits remarkable features, such as high efficiency and regioselectivity, mild reaction conditions, easy operation, and excellent compatibility with air and a broad spectrum of organic and aqueous solvents